Electrically-controlled lock.



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PATENTED JUNEQ, 1903.-

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' UNITED STATES Patented-June 9,1903.

JAMES CORBETT, OF TORONTO, CANADA.

ELECTRlCALLY-CONTROLLED LOCK.

SPECIFICATION forming part of Letters Patent No. 730,346, dated J' une 9, 1903.

Application tiled November 27, 1901. Serial No. 33,870. (No model.)

To all whom t may concern:

Be it known that I, JAMES CORBETT, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Electrically-Controlled Locks for Workmens Time-Checkers, of which the following is a specification.

My invention relates to improvements in accordance with my invention, the door of the upper portion being shown open. Fig. 2

is a longitudinal section of the upper por# tion.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is the main casing of the cabinet, and A the narrow upper portion.

B is the door of the upper portion A'.

A2 is the top of the lower portion A, which is provided with a check-chute a.

C is the front board of the top portion of the cabinet, which is provided with a series of cross-bars c, provided with pockets c to receive the checks.

D 'is the notched catch in the door.

E is the lever, pivoted on the plate e and `provided with a pin e', which extends through the 'arc-shaped slot c2. The long end of the lever E when the door D is open rests upon and keeps the latch F tilted. Normally, however, the lever E forms the armature or keeper of the magnet G. A spring g extends to one side of the magnet, so as to throw the lever or keeper E down l.when the circuit is broken, and thus overcome the residual magnetism.

2 and 3 arev circuit-wires leading from the magnet G to the sounder 4 and battery 5, respectively.

9 and 10 are short-circuiting wires leading` to the push-button v'11, located inside the drawer. When the push-button is pressed so as to make the connection between the ends of the wires, the circuit passes through such wires, and the magnet G is short-circuited and allows the lever E to drop on the catch F and unlock the door. This can only be accomplished when the 'timekeepen who possesses the key of the door, desires, such as when a man is ill or in any case of emergency when he wishes to let a man go. A man may then be given his check before closing time. p 14 is awire leading from the battery to the sounder 4, being provided with a knife-switch l5 intermediate of its length.

v19 is a wire leading from the battery 5 to the sounder 4 and provided with a knifeswitch 2O and galvanometer 21.

24 is a wire leading from the sounder 4 to the battery 5 and provided with a bellk 25.

Having now described the principal parts involved in my invention, I shall brieiiy describe its operation and utility. The galvanonieter 21 is to tell when the current is put on and the bell 25 when the current is broken, in which case the circuit is completed through the bell, which is kept ringing until the circuit is restored. It is first desirable that the men should be able to obtain their checks, say, in the middle of the day and the evening ben fore they leave, and for this purpose the knifeswitchv 15 is thrown open and the circuit being broken the magnet G allows the lever or armature E to drop upon the catch F and the door B is thrown open, any suitable spring being provided so as to do this automatically. The checks may now be taken out bythe men,

and the timekeeper, whose duty it is to attend to the checker, must go around and close all the doors previous to the next entrance of the men into the factory or works. lt will of course be understood that in order to reset the lever E it is merely necessary to pull down upon the pin e until the lever strikes the magnet.

Although l show the circuit-wires as applied to only one workmans time-checkV cabinet, it will of course be understood that there may be any number of cabinets in the circuit and all may be operated from any central point.

What l claim as my invention isl. The combination with a suitable casing and adoor for the same provided with a catch, of a latch pivoted within the casing in such a manner, so that it will swing down into posi tion in the catch, a stop located above the outer endv of the latch, a magnet suitably held within the casing in an electric circuit, means for throwing it out of circuit and a lever in terposed between the magnet and the latch,

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the lever being so arranged that the long end forms the armature of the magnet when the door is closed and thereby allows the latch to lock the door and as soon as the circuit is broken drops down of its own gravity and strikes the latch to release it from the catch as specified.

2. The combination with a suitable casing, and a door for the saine provided'with a catch, of a latch pivoted Within the casing in such a manner, so that it will swing clown into position in the catch, a stop located above the outer end of the latch, a magnet suitably held Within the casing in an electric circuit, means Witnesses:

B. BOYD, R. SHIELDs. 

